PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/12/01-04:42:40 G01 80.3 31.9 6.3 +/- 0.92 10.7 +/- 0.92 0.030 / 0.030 G07 130.2 40.4 8.0 +/- 0.75 11.6 +/- 0.75 0.030 / 0.040 G11 64.6 40.7 5.7 +/- 1.16 8.2 +/- 1.16 0.080 / 0.180 G13 286.0 38.8 7.1 +/- 0.98 10.5 +/- 0.98 0.080 / 0.160 G15 308.7 14.0 3.2 +/- 2.36 8.1 +/- 2.36 0.050 / 0.100 G17 217.9 60.2 8.5 +/- 1.30 9.6 +/- 1.30 0.050 / 0.070 G19 216.4 35.0 9.2 +/- 1.93 14.7 +/- 1.93 0.040 / 0.050 G28 341.9 61.3 5.1 +/- 0.48 5.7 +/- 0.48 0.040 / 0.050 G30 117.8 75.6 7.8 +/- 0.87 8.0 +/- 0.87 0.060 / 0.090